MESON Chess Problem Database

Problem Display
PID: 186034 (3R4/7P/3P2pq/1KNk2rb/3pp1P1/3NP2Q/8/7n w - - 0 1)

Campbell, AWD

Sussex Chess Problem Fraternity, 1918

3R4/7P/3P2pq/1KNk2rb/3pp1P1/3NP2Q/8/7n

#2

9 + 8

15 British Chess Magazine 1918

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sb4#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qxe4#
        • 2.Qa2#
      • 1...Rxg4
        • 2.Qa2#
      • 1...dxe3
        • 2.Qxe4#
      • 1...Re5
        • 2.Sb4#
        • 2.Qa2#
      • 1...Sg3
        • 2.Qa2#
      • 1...Sf2!
    • 1.Qxh1?
      • threat
        • 2.Qxe4#
      • 1...Re5
        • 2.Sb4#
      • 1...Rxg4!
    • 1.Qh2?
      • threat
        • 2.Sb4#
        • 2.Qa2#
      • 1...exd3
        • 2.e4#
      • 1...Sf2
        • 2.Sb4#
      • 1...Sg3
        • 2.Qa2#
      • 1...dxe3!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxe4#
        • 2.Qf7#
      • 1...Qxh7
        • 2.Qxe4#
      • 1...Rxg4
        • 2.Qf7#
      • 1...Bxg4
        • 2.Qxe4#
      • 1...dxe3
        • 2.Qxe4#
      • 1...exf3
        • 2.e4#
      • 1...Qg7
        • 2.Qxe4#
      • 1...Qf8
        • 2.Qxe4#
      • 1...Re5
        • 2.Sb4#
      • 1...Rf5
        • 2.Qxe4#
      • 1...Sf2
        • 2.Qf7#
      • 1...Sg3
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK::S(A)
  • Tries
    • Try
      • Q(C);P_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XP(D)::QAB(C)
        • P(b);XP(B)::QAB1(C),XP(c)
        • S(a);::QAB(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);P_PINP(c),XS(a)
      • Threat
        • QAB1(C),XP(c)
      • Vars
        • R(e);SBLOCK::S(A)
      • Refutation
        • R(e);XP(D)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE,XS(A)::P(B)
        • S(a);::S(A)
        • S(a);::QAB(C)
      • Refutation
        • P(b);XP(B)
  • Actual
    • Q(C);P_PINP(c)
    • Threat
      • DUALS(2)
    • Vars
      • Q(h);XP(H)::QAB1(C),XP(c)
      • R(e);XP(D)::QAB(C)
      • B(f);XP(D)::QAB1(C),XP(c)
      • P(b);XP(B)::QAB1(C),XP(c)
      • P(c);N_SPINP(c),OGATE,XQ(C)::P(B)
      • Q(h);::QAB1(C),XP(c)
      • R(e);SBLOCK::S(A)
      • R(e);::QAB1(C),XP(c)
      • S(a);::QAB(C)
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